Diagrams.Trail:splitAtParam from diagrams-lib-1.3.0.3, B

Percentage Accurate: 88.2% → 100.0%
Time: 5.3s
Alternatives: 5
Speedup: 1.0×

Specification

?
\[\begin{array}{l} \\ \frac{x \cdot y}{y + 1} \end{array} \]
(FPCore (x y) :precision binary64 (/ (* x y) (+ y 1.0)))
double code(double x, double y) {
	return (x * y) / (y + 1.0);
}
real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    code = (x * y) / (y + 1.0d0)
end function
public static double code(double x, double y) {
	return (x * y) / (y + 1.0);
}
def code(x, y):
	return (x * y) / (y + 1.0)
function code(x, y)
	return Float64(Float64(x * y) / Float64(y + 1.0))
end
function tmp = code(x, y)
	tmp = (x * y) / (y + 1.0);
end
code[x_, y_] := N[(N[(x * y), $MachinePrecision] / N[(y + 1.0), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
\frac{x \cdot y}{y + 1}
\end{array}

Sampling outcomes in binary64 precision:

Local Percentage Accuracy vs ?

The average percentage accuracy by input value. Horizontal axis shows value of an input variable; the variable is choosen in the title. Vertical axis is accuracy; higher is better. Red represent the original program, while blue represents Herbie's suggestion. These can be toggled with buttons below the plot. The line is an average while dots represent individual samples.

Accuracy vs Speed?

Herbie found 5 alternatives:

AlternativeAccuracySpeedup
The accuracy (vertical axis) and speed (horizontal axis) of each alternatives. Up and to the right is better. The red square shows the initial program, and each blue circle shows an alternative.The line shows the best available speed-accuracy tradeoffs.

Initial Program: 88.2% accurate, 1.0× speedup?

\[\begin{array}{l} \\ \frac{x \cdot y}{y + 1} \end{array} \]
(FPCore (x y) :precision binary64 (/ (* x y) (+ y 1.0)))
double code(double x, double y) {
	return (x * y) / (y + 1.0);
}
real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    code = (x * y) / (y + 1.0d0)
end function
public static double code(double x, double y) {
	return (x * y) / (y + 1.0);
}
def code(x, y):
	return (x * y) / (y + 1.0)
function code(x, y)
	return Float64(Float64(x * y) / Float64(y + 1.0))
end
function tmp = code(x, y)
	tmp = (x * y) / (y + 1.0);
end
code[x_, y_] := N[(N[(x * y), $MachinePrecision] / N[(y + 1.0), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
\frac{x \cdot y}{y + 1}
\end{array}

Alternative 1: 100.0% accurate, 1.0× speedup?

\[\begin{array}{l} \\ \frac{y}{1 + y} \cdot x \end{array} \]
(FPCore (x y) :precision binary64 (* (/ y (+ 1.0 y)) x))
double code(double x, double y) {
	return (y / (1.0 + y)) * x;
}
real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    code = (y / (1.0d0 + y)) * x
end function
public static double code(double x, double y) {
	return (y / (1.0 + y)) * x;
}
def code(x, y):
	return (y / (1.0 + y)) * x
function code(x, y)
	return Float64(Float64(y / Float64(1.0 + y)) * x)
end
function tmp = code(x, y)
	tmp = (y / (1.0 + y)) * x;
end
code[x_, y_] := N[(N[(y / N[(1.0 + y), $MachinePrecision]), $MachinePrecision] * x), $MachinePrecision]
\begin{array}{l}

\\
\frac{y}{1 + y} \cdot x
\end{array}
Derivation
  1. Initial program 87.5%

    \[\frac{x \cdot y}{y + 1} \]
  2. Add Preprocessing
  3. Step-by-step derivation
    1. lift-/.f64N/A

      \[\leadsto \color{blue}{\frac{x \cdot y}{y + 1}} \]
    2. lift-*.f64N/A

      \[\leadsto \frac{\color{blue}{x \cdot y}}{y + 1} \]
    3. associate-/l*N/A

      \[\leadsto \color{blue}{x \cdot \frac{y}{y + 1}} \]
    4. *-commutativeN/A

      \[\leadsto \color{blue}{\frac{y}{y + 1} \cdot x} \]
    5. lower-*.f64N/A

      \[\leadsto \color{blue}{\frac{y}{y + 1} \cdot x} \]
    6. lower-/.f64100.0

      \[\leadsto \color{blue}{\frac{y}{y + 1}} \cdot x \]
    7. lift-+.f64N/A

      \[\leadsto \frac{y}{\color{blue}{y + 1}} \cdot x \]
    8. +-commutativeN/A

      \[\leadsto \frac{y}{\color{blue}{1 + y}} \cdot x \]
    9. lower-+.f64100.0

      \[\leadsto \frac{y}{\color{blue}{1 + y}} \cdot x \]
  4. Applied rewrites100.0%

    \[\leadsto \color{blue}{\frac{y}{1 + y} \cdot x} \]
  5. Add Preprocessing

Alternative 2: 99.2% accurate, 0.6× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;y \leq -1 \lor \neg \left(y \leq 1.2\right):\\ \;\;\;\;x - \frac{x}{y}\\ \mathbf{else}:\\ \;\;\;\;\mathsf{fma}\left(y \cdot x - x, y, x\right) \cdot y\\ \end{array} \end{array} \]
(FPCore (x y)
 :precision binary64
 (if (or (<= y -1.0) (not (<= y 1.2)))
   (- x (/ x y))
   (* (fma (- (* y x) x) y x) y)))
double code(double x, double y) {
	double tmp;
	if ((y <= -1.0) || !(y <= 1.2)) {
		tmp = x - (x / y);
	} else {
		tmp = fma(((y * x) - x), y, x) * y;
	}
	return tmp;
}
function code(x, y)
	tmp = 0.0
	if ((y <= -1.0) || !(y <= 1.2))
		tmp = Float64(x - Float64(x / y));
	else
		tmp = Float64(fma(Float64(Float64(y * x) - x), y, x) * y);
	end
	return tmp
end
code[x_, y_] := If[Or[LessEqual[y, -1.0], N[Not[LessEqual[y, 1.2]], $MachinePrecision]], N[(x - N[(x / y), $MachinePrecision]), $MachinePrecision], N[(N[(N[(N[(y * x), $MachinePrecision] - x), $MachinePrecision] * y + x), $MachinePrecision] * y), $MachinePrecision]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;y \leq -1 \lor \neg \left(y \leq 1.2\right):\\
\;\;\;\;x - \frac{x}{y}\\

\mathbf{else}:\\
\;\;\;\;\mathsf{fma}\left(y \cdot x - x, y, x\right) \cdot y\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if y < -1 or 1.19999999999999996 < y

    1. Initial program 74.5%

      \[\frac{x \cdot y}{y + 1} \]
    2. Add Preprocessing
    3. Taylor expanded in y around inf

      \[\leadsto \color{blue}{x + -1 \cdot \frac{x}{y}} \]
    4. Step-by-step derivation
      1. mul-1-negN/A

        \[\leadsto x + \color{blue}{\left(\mathsf{neg}\left(\frac{x}{y}\right)\right)} \]
      2. unsub-negN/A

        \[\leadsto \color{blue}{x - \frac{x}{y}} \]
      3. lower--.f64N/A

        \[\leadsto \color{blue}{x - \frac{x}{y}} \]
      4. lower-/.f6499.4

        \[\leadsto x - \color{blue}{\frac{x}{y}} \]
    5. Applied rewrites99.4%

      \[\leadsto \color{blue}{x - \frac{x}{y}} \]

    if -1 < y < 1.19999999999999996

    1. Initial program 99.9%

      \[\frac{x \cdot y}{y + 1} \]
    2. Add Preprocessing
    3. Taylor expanded in y around 0

      \[\leadsto \color{blue}{y \cdot \left(x + y \cdot \left(x \cdot y - x\right)\right)} \]
    4. Step-by-step derivation
      1. *-commutativeN/A

        \[\leadsto \color{blue}{\left(x + y \cdot \left(x \cdot y - x\right)\right) \cdot y} \]
      2. lower-*.f64N/A

        \[\leadsto \color{blue}{\left(x + y \cdot \left(x \cdot y - x\right)\right) \cdot y} \]
      3. +-commutativeN/A

        \[\leadsto \color{blue}{\left(y \cdot \left(x \cdot y - x\right) + x\right)} \cdot y \]
      4. *-commutativeN/A

        \[\leadsto \left(\color{blue}{\left(x \cdot y - x\right) \cdot y} + x\right) \cdot y \]
      5. lower-fma.f64N/A

        \[\leadsto \color{blue}{\mathsf{fma}\left(x \cdot y - x, y, x\right)} \cdot y \]
      6. lower--.f64N/A

        \[\leadsto \mathsf{fma}\left(\color{blue}{x \cdot y - x}, y, x\right) \cdot y \]
      7. *-commutativeN/A

        \[\leadsto \mathsf{fma}\left(\color{blue}{y \cdot x} - x, y, x\right) \cdot y \]
      8. lower-*.f6499.1

        \[\leadsto \mathsf{fma}\left(\color{blue}{y \cdot x} - x, y, x\right) \cdot y \]
    5. Applied rewrites99.1%

      \[\leadsto \color{blue}{\mathsf{fma}\left(y \cdot x - x, y, x\right) \cdot y} \]
  3. Recombined 2 regimes into one program.
  4. Final simplification99.2%

    \[\leadsto \begin{array}{l} \mathbf{if}\;y \leq -1 \lor \neg \left(y \leq 1.2\right):\\ \;\;\;\;x - \frac{x}{y}\\ \mathbf{else}:\\ \;\;\;\;\mathsf{fma}\left(y \cdot x - x, y, x\right) \cdot y\\ \end{array} \]
  5. Add Preprocessing

Alternative 3: 99.0% accurate, 0.6× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;y \leq -1 \lor \neg \left(y \leq 1\right):\\ \;\;\;\;x - \frac{x}{y}\\ \mathbf{else}:\\ \;\;\;\;\mathsf{fma}\left(y, x, \left(\left(-y\right) \cdot y\right) \cdot x\right)\\ \end{array} \end{array} \]
(FPCore (x y)
 :precision binary64
 (if (or (<= y -1.0) (not (<= y 1.0)))
   (- x (/ x y))
   (fma y x (* (* (- y) y) x))))
double code(double x, double y) {
	double tmp;
	if ((y <= -1.0) || !(y <= 1.0)) {
		tmp = x - (x / y);
	} else {
		tmp = fma(y, x, ((-y * y) * x));
	}
	return tmp;
}
function code(x, y)
	tmp = 0.0
	if ((y <= -1.0) || !(y <= 1.0))
		tmp = Float64(x - Float64(x / y));
	else
		tmp = fma(y, x, Float64(Float64(Float64(-y) * y) * x));
	end
	return tmp
end
code[x_, y_] := If[Or[LessEqual[y, -1.0], N[Not[LessEqual[y, 1.0]], $MachinePrecision]], N[(x - N[(x / y), $MachinePrecision]), $MachinePrecision], N[(y * x + N[(N[((-y) * y), $MachinePrecision] * x), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;y \leq -1 \lor \neg \left(y \leq 1\right):\\
\;\;\;\;x - \frac{x}{y}\\

\mathbf{else}:\\
\;\;\;\;\mathsf{fma}\left(y, x, \left(\left(-y\right) \cdot y\right) \cdot x\right)\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if y < -1 or 1 < y

    1. Initial program 74.5%

      \[\frac{x \cdot y}{y + 1} \]
    2. Add Preprocessing
    3. Taylor expanded in y around inf

      \[\leadsto \color{blue}{x + -1 \cdot \frac{x}{y}} \]
    4. Step-by-step derivation
      1. mul-1-negN/A

        \[\leadsto x + \color{blue}{\left(\mathsf{neg}\left(\frac{x}{y}\right)\right)} \]
      2. unsub-negN/A

        \[\leadsto \color{blue}{x - \frac{x}{y}} \]
      3. lower--.f64N/A

        \[\leadsto \color{blue}{x - \frac{x}{y}} \]
      4. lower-/.f6499.4

        \[\leadsto x - \color{blue}{\frac{x}{y}} \]
    5. Applied rewrites99.4%

      \[\leadsto \color{blue}{x - \frac{x}{y}} \]

    if -1 < y < 1

    1. Initial program 99.9%

      \[\frac{x \cdot y}{y + 1} \]
    2. Add Preprocessing
    3. Taylor expanded in y around 0

      \[\leadsto \color{blue}{y \cdot \left(x + -1 \cdot \left(x \cdot y\right)\right)} \]
    4. Step-by-step derivation
      1. *-commutativeN/A

        \[\leadsto \color{blue}{\left(x + -1 \cdot \left(x \cdot y\right)\right) \cdot y} \]
      2. +-commutativeN/A

        \[\leadsto \color{blue}{\left(-1 \cdot \left(x \cdot y\right) + x\right)} \cdot y \]
      3. remove-double-negN/A

        \[\leadsto \left(-1 \cdot \left(x \cdot y\right) + \color{blue}{\left(\mathsf{neg}\left(\left(\mathsf{neg}\left(x\right)\right)\right)\right)}\right) \cdot y \]
      4. mul-1-negN/A

        \[\leadsto \left(-1 \cdot \left(x \cdot y\right) + \left(\mathsf{neg}\left(\color{blue}{-1 \cdot x}\right)\right)\right) \cdot y \]
      5. sub-negN/A

        \[\leadsto \color{blue}{\left(-1 \cdot \left(x \cdot y\right) - -1 \cdot x\right)} \cdot y \]
      6. lower-*.f64N/A

        \[\leadsto \color{blue}{\left(-1 \cdot \left(x \cdot y\right) - -1 \cdot x\right) \cdot y} \]
      7. cancel-sign-sub-invN/A

        \[\leadsto \color{blue}{\left(-1 \cdot \left(x \cdot y\right) + \left(\mathsf{neg}\left(-1\right)\right) \cdot x\right)} \cdot y \]
      8. metadata-evalN/A

        \[\leadsto \left(-1 \cdot \left(x \cdot y\right) + \color{blue}{1} \cdot x\right) \cdot y \]
      9. *-lft-identityN/A

        \[\leadsto \left(-1 \cdot \left(x \cdot y\right) + \color{blue}{x}\right) \cdot y \]
      10. associate-*r*N/A

        \[\leadsto \left(\color{blue}{\left(-1 \cdot x\right) \cdot y} + x\right) \cdot y \]
      11. lower-fma.f64N/A

        \[\leadsto \color{blue}{\mathsf{fma}\left(-1 \cdot x, y, x\right)} \cdot y \]
      12. mul-1-negN/A

        \[\leadsto \mathsf{fma}\left(\color{blue}{\mathsf{neg}\left(x\right)}, y, x\right) \cdot y \]
      13. lower-neg.f6498.6

        \[\leadsto \mathsf{fma}\left(\color{blue}{-x}, y, x\right) \cdot y \]
    5. Applied rewrites98.6%

      \[\leadsto \color{blue}{\mathsf{fma}\left(-x, y, x\right) \cdot y} \]
    6. Step-by-step derivation
      1. Applied rewrites98.6%

        \[\leadsto \mathsf{fma}\left(y, \color{blue}{x}, \left(\left(-y\right) \cdot y\right) \cdot x\right) \]
    7. Recombined 2 regimes into one program.
    8. Final simplification99.0%

      \[\leadsto \begin{array}{l} \mathbf{if}\;y \leq -1 \lor \neg \left(y \leq 1\right):\\ \;\;\;\;x - \frac{x}{y}\\ \mathbf{else}:\\ \;\;\;\;\mathsf{fma}\left(y, x, \left(\left(-y\right) \cdot y\right) \cdot x\right)\\ \end{array} \]
    9. Add Preprocessing

    Alternative 4: 99.0% accurate, 0.7× speedup?

    \[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;y \leq -1 \lor \neg \left(y \leq 1\right):\\ \;\;\;\;x - \frac{x}{y}\\ \mathbf{else}:\\ \;\;\;\;\mathsf{fma}\left(-x, y, x\right) \cdot y\\ \end{array} \end{array} \]
    (FPCore (x y)
     :precision binary64
     (if (or (<= y -1.0) (not (<= y 1.0))) (- x (/ x y)) (* (fma (- x) y x) y)))
    double code(double x, double y) {
    	double tmp;
    	if ((y <= -1.0) || !(y <= 1.0)) {
    		tmp = x - (x / y);
    	} else {
    		tmp = fma(-x, y, x) * y;
    	}
    	return tmp;
    }
    
    function code(x, y)
    	tmp = 0.0
    	if ((y <= -1.0) || !(y <= 1.0))
    		tmp = Float64(x - Float64(x / y));
    	else
    		tmp = Float64(fma(Float64(-x), y, x) * y);
    	end
    	return tmp
    end
    
    code[x_, y_] := If[Or[LessEqual[y, -1.0], N[Not[LessEqual[y, 1.0]], $MachinePrecision]], N[(x - N[(x / y), $MachinePrecision]), $MachinePrecision], N[(N[((-x) * y + x), $MachinePrecision] * y), $MachinePrecision]]
    
    \begin{array}{l}
    
    \\
    \begin{array}{l}
    \mathbf{if}\;y \leq -1 \lor \neg \left(y \leq 1\right):\\
    \;\;\;\;x - \frac{x}{y}\\
    
    \mathbf{else}:\\
    \;\;\;\;\mathsf{fma}\left(-x, y, x\right) \cdot y\\
    
    
    \end{array}
    \end{array}
    
    Derivation
    1. Split input into 2 regimes
    2. if y < -1 or 1 < y

      1. Initial program 74.5%

        \[\frac{x \cdot y}{y + 1} \]
      2. Add Preprocessing
      3. Taylor expanded in y around inf

        \[\leadsto \color{blue}{x + -1 \cdot \frac{x}{y}} \]
      4. Step-by-step derivation
        1. mul-1-negN/A

          \[\leadsto x + \color{blue}{\left(\mathsf{neg}\left(\frac{x}{y}\right)\right)} \]
        2. unsub-negN/A

          \[\leadsto \color{blue}{x - \frac{x}{y}} \]
        3. lower--.f64N/A

          \[\leadsto \color{blue}{x - \frac{x}{y}} \]
        4. lower-/.f6499.4

          \[\leadsto x - \color{blue}{\frac{x}{y}} \]
      5. Applied rewrites99.4%

        \[\leadsto \color{blue}{x - \frac{x}{y}} \]

      if -1 < y < 1

      1. Initial program 99.9%

        \[\frac{x \cdot y}{y + 1} \]
      2. Add Preprocessing
      3. Taylor expanded in y around 0

        \[\leadsto \color{blue}{y \cdot \left(x + -1 \cdot \left(x \cdot y\right)\right)} \]
      4. Step-by-step derivation
        1. *-commutativeN/A

          \[\leadsto \color{blue}{\left(x + -1 \cdot \left(x \cdot y\right)\right) \cdot y} \]
        2. +-commutativeN/A

          \[\leadsto \color{blue}{\left(-1 \cdot \left(x \cdot y\right) + x\right)} \cdot y \]
        3. remove-double-negN/A

          \[\leadsto \left(-1 \cdot \left(x \cdot y\right) + \color{blue}{\left(\mathsf{neg}\left(\left(\mathsf{neg}\left(x\right)\right)\right)\right)}\right) \cdot y \]
        4. mul-1-negN/A

          \[\leadsto \left(-1 \cdot \left(x \cdot y\right) + \left(\mathsf{neg}\left(\color{blue}{-1 \cdot x}\right)\right)\right) \cdot y \]
        5. sub-negN/A

          \[\leadsto \color{blue}{\left(-1 \cdot \left(x \cdot y\right) - -1 \cdot x\right)} \cdot y \]
        6. lower-*.f64N/A

          \[\leadsto \color{blue}{\left(-1 \cdot \left(x \cdot y\right) - -1 \cdot x\right) \cdot y} \]
        7. cancel-sign-sub-invN/A

          \[\leadsto \color{blue}{\left(-1 \cdot \left(x \cdot y\right) + \left(\mathsf{neg}\left(-1\right)\right) \cdot x\right)} \cdot y \]
        8. metadata-evalN/A

          \[\leadsto \left(-1 \cdot \left(x \cdot y\right) + \color{blue}{1} \cdot x\right) \cdot y \]
        9. *-lft-identityN/A

          \[\leadsto \left(-1 \cdot \left(x \cdot y\right) + \color{blue}{x}\right) \cdot y \]
        10. associate-*r*N/A

          \[\leadsto \left(\color{blue}{\left(-1 \cdot x\right) \cdot y} + x\right) \cdot y \]
        11. lower-fma.f64N/A

          \[\leadsto \color{blue}{\mathsf{fma}\left(-1 \cdot x, y, x\right)} \cdot y \]
        12. mul-1-negN/A

          \[\leadsto \mathsf{fma}\left(\color{blue}{\mathsf{neg}\left(x\right)}, y, x\right) \cdot y \]
        13. lower-neg.f6498.6

          \[\leadsto \mathsf{fma}\left(\color{blue}{-x}, y, x\right) \cdot y \]
      5. Applied rewrites98.6%

        \[\leadsto \color{blue}{\mathsf{fma}\left(-x, y, x\right) \cdot y} \]
    3. Recombined 2 regimes into one program.
    4. Final simplification99.0%

      \[\leadsto \begin{array}{l} \mathbf{if}\;y \leq -1 \lor \neg \left(y \leq 1\right):\\ \;\;\;\;x - \frac{x}{y}\\ \mathbf{else}:\\ \;\;\;\;\mathsf{fma}\left(-x, y, x\right) \cdot y\\ \end{array} \]
    5. Add Preprocessing

    Alternative 5: 50.3% accurate, 3.3× speedup?

    \[\begin{array}{l} \\ y \cdot x \end{array} \]
    (FPCore (x y) :precision binary64 (* y x))
    double code(double x, double y) {
    	return y * x;
    }
    
    real(8) function code(x, y)
        real(8), intent (in) :: x
        real(8), intent (in) :: y
        code = y * x
    end function
    
    public static double code(double x, double y) {
    	return y * x;
    }
    
    def code(x, y):
    	return y * x
    
    function code(x, y)
    	return Float64(y * x)
    end
    
    function tmp = code(x, y)
    	tmp = y * x;
    end
    
    code[x_, y_] := N[(y * x), $MachinePrecision]
    
    \begin{array}{l}
    
    \\
    y \cdot x
    \end{array}
    
    Derivation
    1. Initial program 87.5%

      \[\frac{x \cdot y}{y + 1} \]
    2. Add Preprocessing
    3. Taylor expanded in y around inf

      \[\leadsto \color{blue}{x + -1 \cdot \frac{x}{y}} \]
    4. Step-by-step derivation
      1. mul-1-negN/A

        \[\leadsto x + \color{blue}{\left(\mathsf{neg}\left(\frac{x}{y}\right)\right)} \]
      2. unsub-negN/A

        \[\leadsto \color{blue}{x - \frac{x}{y}} \]
      3. lower--.f64N/A

        \[\leadsto \color{blue}{x - \frac{x}{y}} \]
      4. lower-/.f6449.5

        \[\leadsto x - \color{blue}{\frac{x}{y}} \]
    5. Applied rewrites49.5%

      \[\leadsto \color{blue}{x - \frac{x}{y}} \]
    6. Taylor expanded in y around 0

      \[\leadsto -1 \cdot \color{blue}{\frac{x}{y}} \]
    7. Step-by-step derivation
      1. Applied rewrites3.1%

        \[\leadsto \frac{-x}{\color{blue}{y}} \]
      2. Taylor expanded in y around 0

        \[\leadsto \color{blue}{x \cdot y} \]
      3. Step-by-step derivation
        1. *-commutativeN/A

          \[\leadsto \color{blue}{y \cdot x} \]
        2. lower-*.f6451.0

          \[\leadsto \color{blue}{y \cdot x} \]
      4. Applied rewrites51.0%

        \[\leadsto \color{blue}{y \cdot x} \]
      5. Add Preprocessing

      Developer Target 1: 100.0% accurate, 0.4× speedup?

      \[\begin{array}{l} \\ \begin{array}{l} t_0 := \frac{x}{y \cdot y} - \left(\frac{x}{y} - x\right)\\ \mathbf{if}\;y < -3693.8482788297247:\\ \;\;\;\;t\_0\\ \mathbf{elif}\;y < 6799310503.41891:\\ \;\;\;\;\frac{x \cdot y}{y + 1}\\ \mathbf{else}:\\ \;\;\;\;t\_0\\ \end{array} \end{array} \]
      (FPCore (x y)
       :precision binary64
       (let* ((t_0 (- (/ x (* y y)) (- (/ x y) x))))
         (if (< y -3693.8482788297247)
           t_0
           (if (< y 6799310503.41891) (/ (* x y) (+ y 1.0)) t_0))))
      double code(double x, double y) {
      	double t_0 = (x / (y * y)) - ((x / y) - x);
      	double tmp;
      	if (y < -3693.8482788297247) {
      		tmp = t_0;
      	} else if (y < 6799310503.41891) {
      		tmp = (x * y) / (y + 1.0);
      	} else {
      		tmp = t_0;
      	}
      	return tmp;
      }
      
      real(8) function code(x, y)
          real(8), intent (in) :: x
          real(8), intent (in) :: y
          real(8) :: t_0
          real(8) :: tmp
          t_0 = (x / (y * y)) - ((x / y) - x)
          if (y < (-3693.8482788297247d0)) then
              tmp = t_0
          else if (y < 6799310503.41891d0) then
              tmp = (x * y) / (y + 1.0d0)
          else
              tmp = t_0
          end if
          code = tmp
      end function
      
      public static double code(double x, double y) {
      	double t_0 = (x / (y * y)) - ((x / y) - x);
      	double tmp;
      	if (y < -3693.8482788297247) {
      		tmp = t_0;
      	} else if (y < 6799310503.41891) {
      		tmp = (x * y) / (y + 1.0);
      	} else {
      		tmp = t_0;
      	}
      	return tmp;
      }
      
      def code(x, y):
      	t_0 = (x / (y * y)) - ((x / y) - x)
      	tmp = 0
      	if y < -3693.8482788297247:
      		tmp = t_0
      	elif y < 6799310503.41891:
      		tmp = (x * y) / (y + 1.0)
      	else:
      		tmp = t_0
      	return tmp
      
      function code(x, y)
      	t_0 = Float64(Float64(x / Float64(y * y)) - Float64(Float64(x / y) - x))
      	tmp = 0.0
      	if (y < -3693.8482788297247)
      		tmp = t_0;
      	elseif (y < 6799310503.41891)
      		tmp = Float64(Float64(x * y) / Float64(y + 1.0));
      	else
      		tmp = t_0;
      	end
      	return tmp
      end
      
      function tmp_2 = code(x, y)
      	t_0 = (x / (y * y)) - ((x / y) - x);
      	tmp = 0.0;
      	if (y < -3693.8482788297247)
      		tmp = t_0;
      	elseif (y < 6799310503.41891)
      		tmp = (x * y) / (y + 1.0);
      	else
      		tmp = t_0;
      	end
      	tmp_2 = tmp;
      end
      
      code[x_, y_] := Block[{t$95$0 = N[(N[(x / N[(y * y), $MachinePrecision]), $MachinePrecision] - N[(N[(x / y), $MachinePrecision] - x), $MachinePrecision]), $MachinePrecision]}, If[Less[y, -3693.8482788297247], t$95$0, If[Less[y, 6799310503.41891], N[(N[(x * y), $MachinePrecision] / N[(y + 1.0), $MachinePrecision]), $MachinePrecision], t$95$0]]]
      
      \begin{array}{l}
      
      \\
      \begin{array}{l}
      t_0 := \frac{x}{y \cdot y} - \left(\frac{x}{y} - x\right)\\
      \mathbf{if}\;y < -3693.8482788297247:\\
      \;\;\;\;t\_0\\
      
      \mathbf{elif}\;y < 6799310503.41891:\\
      \;\;\;\;\frac{x \cdot y}{y + 1}\\
      
      \mathbf{else}:\\
      \;\;\;\;t\_0\\
      
      
      \end{array}
      \end{array}
      

      Reproduce

      ?
      herbie shell --seed 2024305 
      (FPCore (x y)
        :name "Diagrams.Trail:splitAtParam  from diagrams-lib-1.3.0.3, B"
        :precision binary64
      
        :alt
        (! :herbie-platform default (if (< y -36938482788297247/10000000000000) (- (/ x (* y y)) (- (/ x y) x)) (if (< y 679931050341891/100000) (/ (* x y) (+ y 1)) (- (/ x (* y y)) (- (/ x y) x)))))
      
        (/ (* x y) (+ y 1.0)))